Convert Barleycorn to Mile
Convert barleycorns to miles instantly. 1 barleycorn = 5.260943e-6 mile — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Mile to Barleycorn converter for the reverse conversion.
Units explained
Barleycorn
A barleycorn is an Imperial unit of length equal to one third of an inch (about 8.47 mm). It is the basis of UK shoe sizing and is one of the oldest English length units still in use.
The barleycorn derives from the average length of a grain of barley as a natural reference. Standardised at exactly 1/3 inch by the Statute of Edward II in 1324, which used three barleycorns to define an inch.
Barleycorns are the foundation of UK and US children's shoe sizing — each whole size differs by one barleycorn. Also occasionally referenced in horse-handling and historical English literature.
Standardised in 1324 by the Statute of Edward II at 1/3 inch; the value became exact in 1959 when the inch was fixed at 25.4 mm.
Mile
A mile (statute mile) is an Imperial and US customary unit of length equal to 5,280 feet or exactly 1,609.344 meters. It is the standard unit for road distances in the United States and the United Kingdom.
The mile derives from the Roman mille passus ("thousand paces" — about 1,480 meters). The English statute mile was fixed at 5,280 feet by the Weights and Measures Act of 1593, and exactly defined as 1,609.344 m by the 1959 International Yard and Pound Agreement.
Miles are used in the US and UK for road signs, speed limits (mph), athletic events (one-mile run), and geographic distances. Aviation also uses statute miles for some visibility measurements.
Roman origin (mille passus); English statute mile fixed at 5,280 feet in 1593; standardized to 1,609.344 m exactly by the 1959 International Yard and Pound Agreement.
Barleycorn to Mile conversion formula
The relationship between barleycorns and miles:
To convert barleycorns to miles, multiply the value in barleycorns by 5.260943e-6. To reverse, multiply miles by 190079.9992516535.
How to use this converter
Type a value into the calculator. The result in miles updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Mile to Barleycorn converter for the reverse direction.
Step-by-step: convert barleycorns to miles
- Write down the value in barleycorns (barleycorn).
- Multiply that value by the factor 5.260943e-6.
- The product is the equivalent value in miles (mi).
- To reverse, multiply the mile value by 190079.9992516535.
Worked examples
Example 1 — Convert 1 barleycorn to mi:
1 × 5.260943e-6 = 5.260943e-6 mi
Example 2 — Convert 100 barleycorn to mi:
100 × 5.260943e-6 = 0.0005260943 mi
Real-world example — Small to geographic-scale
100,000 barleycorns equals one mile — a useful conversion when small-scale survey diagrams must be related to road-network distances on a different map.
100000 barleycorn × 5.260943e-6 = 0.5260942782 mi
Real-world example — Architectural to geographic scale
A 100,000-barleycorn measurement equals one mile. The five-order-of-magnitude scale change comes up in mapping work where architectural site plans must be related to road-network maps.
100000 barleycorn × 5.260943e-6 = 0.5260942782 mi
Barleycorn to Mile conversion table
Standard reference values for converting barleycorns to miles:
| Barleycorn [barleycorn] | Mile [mi] |
|---|---|
| 0.01 | 5.260943e-8 |
| 0.1 | 5.260943e-7 |
| 1 | 5.260943e-6 |
| 2 | 1.052189e-5 |
| 3 | 1.578283e-5 |
| 4 | 2.104377e-5 |
| 5 | 2.630471e-5 |
| 10 | 5.260943e-5 |
| 20 | 0.0001052189 |
| 30 | 0.0001578283 |
| 40 | 0.0002104377 |
| 50 | 0.0002630471 |
| 100 | 0.0005260943 |
| 500 | 0.0026304714 |
| 1000 | 0.0052609428 |
Frequently asked questions
How many miles is 1 barleycorn?
How do I convert barleycorns to miles?
How do I convert miles back to barleycorns?
How many miles is 100 barleycorns?
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Metric / SI (4 units)
Imperial / US Customary (26 units)
Sources & references
Conversion factor (1 barleycorn = 5.260943e-6 mi) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Hydrographic Organization — Resolution on the Nautical Mile
International authority that standardised the nautical mile at exactly 1852 m in 1929 — the value adopted worldwide for sea and air navigation.